ASTM A335 P91, e tsejoang hape e leASME SA335 P91, ke seamless ferritic alloy tšepe pipe bakeng sa tšebeletso e phahameng ea mocheso, UNS No. K91560.
E na le bonyanematla a matla a 585 MPa(85 ksi) le bonyaneho fana ka matla a 415 MPa(lik'hilograma tse 60).
P91haholo-holo e na le likarolo tsa motsoako tse kang chromium le molybdenum, 'me ho eketsoa likarolo tse ling tse fapaneng tsa motsoako, tseo e leng tsatšepe e phahameng, kahoo e na le matla a maholo le ho hanyetsa ho hotle ho hoholo.
Ho feta moo, P91 e fumaneha ka mefuta e 'meli,Mofuta oa 1leMofuta oa 2, 'me e atisa ho sebelisoa lifemeng tsa motlakase, lisebelisoa tsa ho hloekisa, lisebelisoa tsa lik'hemik'hale tsa bohlokoa, le liphaephe libakeng tse nang le mocheso o phahameng le oa khatello e phahameng.
Pipe ea tšepe ea P91 e arotsoe ka mefuta e 'meli, Mofuta oa 1 le Mofuta oa 2.
Mefuta ena ka bobeli e ts'oana ho latela thepa ea mochini le litlhoko tse ling joalo ka kalafo ea mocheso,ka liphapano tse nyane tsa sebopeho sa lik'hemik'hale le tsepamiso e khethehileng ea ts'ebeliso.
Sebopeho sa lik'hemik'hale: Ha ho bapisoa le Mofuta oa 1, motsoako oa lik'hemik'hale oa Mofuta oa 2 o thata haholoanyane 'me o na le lisebelisoa tse ngata tsa alloy ho fana ka mocheso o betere le ho thibela kutu.
Lisebelisoa: Ka lebaka la metsoako e ntlafalitsoeng ea lik'hemik'hale, Mofuta oa 2 o loketse mocheso o phahameng haholo kapa tikolohong e senyang ho feta, kapa lits'ebetsong moo ho hlokahalang matla le nako e telele.
phala ea tšepe ea ASTM A335 e tlameha ho baseamless.
Mokhoa oa ho etsa seamless o arotsoe kapheletso e chesanglehatsela.
Ka tlaase mona ke setšoantšo sa ts'ebetso ea ho qetela e chesang.
Ka ho khetheha, P91, phala ea tšepe e nang le alloy e phahameng, e atisang ho sebelisoa libakeng tse thata ho latela mocheso o phahameng le likhatello, pipe ea tšepe e se nang seam e hatelloa ka mokhoa o ts'oanang 'me e ka etsoa ka marako a teteaneng, kahoo e tiisa ts'ireletso e phahameng le katleho e ntle ea litšenyehelo. .
P91 Liphaephe tsohle li tlameha ho phekoloa ka mocheso ho ntlafatsa microstructure ea phala, ho ntlafatsa thepa ea eona ea mochine, le ho matlafatsa ho hanyetsa mocheso o phahameng le khatello.
Likarolo tsa Lik'hemik'hale tsa P91 Mofuta oa 1
Likarolo tsa Lik'hemik'hale tsa P91 Mofuta oa 2
Ka litšoantšo tse peli tse ka holimo, ho bonolo ho bona phapang pakeng tsa likarolo tsa lik'hemik'hale tsa Mofuta oa 1 le Mofuta oa 2 le lithibelo.
1. Thepa ea Tensile
Teko ea tensile hangata e sebelisoa ho methafana ka matla, matla a tšepe, leelongation ea lenaneo la liteko tsa phala ea tšepe, 'me e sebelisoa haholo ho thepa ea tlhahlobo.
ALetlapa la 5 le fana ka litekanyetso tse baloang.
Moo botenya ba lebota bo leng teng pakeng tsa boleng ba bobeli bo kaholimo, boleng bo tlase ba bolelele bo khethoa ke foromo e latelang:
Longitudinal, P91: E = 32t + 15.00 [E = 1.25t + 15.00]
moo:
E = bolelele ho 2 in. kapa 50 mm, %,
t = botenya ba sebele ba mehlala, ka. [mm].
2. Ho thatafala
Ho ka sebelisoa mekhoa e fapaneng ea tlhahlobo ea boima ba 'mele, ho kenyelletsa Vickers, Brinell le Rockwell.
Botenya ba lebota <0.065 in. [1.7 mm]: Ha ho na teko ea boima bo hlokahalang;
0.065 in. [1.7 mm] ≤ botenya ba lebota <0.200 in. [5.1 mm]: Teko ea boima ba Rockwell e tla sebelisoa;
Botenya ba lebota ≥ 0.200 in. [5.1 limilimithara]: tšebeliso ea boikhethelo ea tlhahlobo ea boima ba Brinell kapa tlhahlobo ea boima ba Rockwell.
Teko ea boima ba Vickers e sebetsa ho botenya bohle ba marako a li-tubing.Mokhoa oa tlhahlobo o etsoa ho latela litlhoko tsa E92.
3. Teko e bataletseng
Liteko li tla etsoa ho latela Karolo ea 20 ea maemo a ASTM A999.
4. Teko ea Bend
Koba 180 ° mocheso oa kamore, ha ho na mapheo a tla hlaha ka ntle ho karolo e kobehileng.
Boholo> NPS25 kapa D / t ≥ 7.0: Teko ea ho khumama e lokela ho etsoa ntle le tlhahlobo ea flattening.
5. P91 Mananeo a Boikhethelo a Teko
Lintho tse latelang tsa liteko ha li hlokehe lintho tsa tlhahlobo, haeba ho hlokahala li ka khethoa ka lipuisano.
S1: Tlhahlobo ea Lihlahisoa
S3: Teko e bataletseng
S4: Sebopeho sa Metal le Liteko tsa ho Etching
S5: Photomicrographs
S6: Photomicrographs bakeng sa Likotoana tsa Motho ka Mong
S7: Phekolo e Ntle ea Mocheso-Kereiti ea P91 Mofuta oa 1 le Mofuta oa 2
Teko ea metsi ea P91 e tla lumellana le litlhoko tse latelang.
Ka ntle bophara ~10in.[250mm] le botenya ba lebota ≤ 0.75in.[19mm]: sena e lokela ho ba teko ea hydrostatic.
Mefuta e meng ea liteko tsa motlakase tse sa senyeheng.
Bakeng sa tšepe ea alloy ea ferritic le li-tubes tsa tšepe tse sa hloekang, lerako le tlas'a khatello e seng ka tlase ho.60% ea matla a tlase a tlhahiso a boletsoeng.
Khatello ea hydro test e tla bolokoa bonyane 5sntle le ho dutla kapa bofokodi bo bong.
Khatello ea metsie ka baloa ho sebelisoa formula:
P = 2St/D
P= khatello ea teko ea hydrostatic ho psi [MPa];
S = khatello ea lerako la pipe ka psi kapa [MPa];
t = botenya ba lebota bo boletsoeng, botenya ba lebota le botenya ho latela nomoro ea kemiso ea ANSI e boletsoeng kapa makhetlo a 1.143 ho feta botenya ba lebota bo boletsoeng, ho. [mm];
D = e boletsoeng ka ntle ho bophara ba bophara, bophara bo ka ntle bo lumellanang le boholo bo boletsoeng ba phala ea ANSI, kapa bophara bo ka ntle bo baloang ka ho eketsa 2t (joalokaha ho hlalositsoe ka holimo) ho bophara bo boletsoeng ka hare, ho. [mm].
Pipe ea P91 e hlahlojoa ka mokhoa oa tlhahlobo ea E213.Tekanyetso ea E213 e ameha haholo ka tlhahlobo ea ultrasonic (UT).
Haeba e hlalositsoe ka ho khetheha ka tatellano, e ka boela ea hlahlojoa ho latela mokhoa oa tlhahlobo oa E309 kapa E570.
Tekanyetso ea E309 hangata e sebetsana le tlhahlobo ea motlakase (eddy current), ha E570 e le mokhoa oa ho hlahloba o kenyelletsang mefuta ea hona joale ea eddy.
Phapang e lumelletsoeng ka Diameter
Bakeng sa phala e laetsoeng hobophara ba ka hare, bophara ba ka hare ha bo na ho fapana ho feta ± 1% ho tloha bophara bo boletsoeng ka hare.
Tubing e laetsoe ho kenaNPS [DN] kapa li-diameter tse ka ntleha ea tlameha ho fapana bophara ba kantle ho feta bo boletsoeng litafoleng tse ka tlase.
Phapang e Dumelletseng Botenya ba Lerako
Litekanyo tsa botenya ba lebota li tla etsoa ho sebelisoa li-caliper tsa mochini kapa lisebelisoa tsa tlhahlobo tse sa senyeheng tse nepahetseng tse nepahetseng.Haeba ho na le phehisano, tekanyo e lekantsoeng ho sebelisa li-caliper tsa mochini e tla ba teng.
Botenya ba lebota bo tlase le bophara ba kantle bakeng sa tlhahlobo bakeng sa ho latela tlhoko ena ea phala e laetsoeng ke NPS [DN] le nomoro ea kemiso e bonts'itsoeng hoASME B36.10M.
Mefokolo
Ho se phethahale ha bokaholimo ho nkoa e le mefokolo haeba e feta 12.5% ea botenya ba lebota kapa botenya bo tlase ba lebota.
Ho se phethahale
Matšoao a mechine, makhopho le likoti, tseo leha e le life tsa tsona tse sa phethahalang li leng botebo ho feta 1/16 in. [1,6 mm].
Litšupa le li-abrasions li hlalosoa e le li-cable marks, li-dinges, li-direct marks, li-roll marks, li-scratches tsa bolo, lintlha, li-die marks le tse ling tse joalo.
Ho lokisa
Litšitiso li ka tlosoa ka ho sila, ha feela botenya ba lerako bo setseng bo se ka tlase ho bonyane botenya ba lebota.
Litokiso li ka boela tsa etsoa ka ho cheselletsa empa li tlameha ho lumellana le litlhoko tse amehang tsa A999.
Li-welds tsohle tsa ho lokisoa ka P91 li tla etsoa ka e 'ngoe ea mekhoa e latelang ea li-welding le lisebelisoa: SMAW, A5.5 / A5.5M E90XX-B9: SAW, A5.23 / A5.23M EB9 + ho se nke lehlakore;GTAW, A5.28/A5.28M ER90S-B9;le FCAW A5.29/A5.29M E91TI-B9.Ho feta moo, kakaretso ea litaba tsa Ni + Mn tsa lisebelisoa tsohle tsa welding tse sebelisetsoang ho lokisa P91 Type 1 le Type 2 ha e na ho feta 1.0%.
Pipe ea P91 e lokela ho phekoloa ka mocheso ho 1350-1470 °F [730-800°C] ka mor'a ho lokisoa ha cheselle.
Sebaka se ka ntle sa phala ea tšepe e hlahlobiloeng e tla ba le lintlha tse latelang:
Lebitso la moetsi kapa letshwao la kgwebo;nomoro e tloaelehileng;kereiti;bolelele le letšoao le eketsehileng "S".
Matšoao a khatello ea hydrostatic le liteko tse sa senyeheng tafoleng e ka tlase le tsona li lokela ho kenyelletsoa.
Haeba phala e lokisoa ka welding, e tla tšoauoa "WR".
p91 Mofuta (Mofuta oa 1 kapa Mofuta oa 2) o lokela ho bontšoa.
EN 10216-2: X10CrMoVNb9-1 kapa 1.4903;
JIS G 3462: STPA 28;
GB/T 5310: 10Cr9Mo1VNb;
Lintho tse lekanang tsena li haufi haholo ka sebopeho sa lik'hemik'hale le thepa ea mochini ho ASTM A335 P91.
Lintho tse bonahalangl: phala ea tšepe ea ASTM A335 P91;
OD: 1/8"- 24";
WT: ho latelaASME B36.10litlhoko;
Kemiso: SCH10, SCH20, SCH30,SCH40, SCH60,SCH80, SCH100, SCH120, SCH140 le SCH160;
Boitsebiso:STD (e tloaelehileng), XS (e matla haholo), kapa XXS (habeli e eketsehileng-e matla);
Boikemisetso: Liphaephe tse sa tloaelehang li fumaneha hape, boholo bo hlophisitsoeng bo fumaneha ka kopo;
Bolelele: Bolelele bo khethehileng le bo sa reroang;
Setifikeiti sa IBR: Re ka ikopanya le mokhatlo oa boraro oa tlhahlobo ho fumana setifikeiti sa IBR ho latela litlhoko tsa hau, mekhatlo ea rona ea tlhahlobo ea tšebelisano-mmoho ke BV, SGS, TUV, joalo-joalo;
QETA: Qetello e bataletseng, e beveled, kapa pheletso ea lipeipi tse kopaneng;
Bokaholimo: Peipi e khanyang, pente, le tšireletso e meng ea nakoana, ho tlosa mafome le ho belisoa, masenke le polasetiki e koahetsoeng, le tšireletso e meng ea nako e telele;
Ho paka: Nyeoe ea lehong, lebanta la tšepe kapa terata ea tšepe ea tšepe, mosireletsi oa ho qetela oa phala ea polasetiki kapa ea tšepe, jj.
